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R600/SI: Fix assertion from copying a TargetGlobalAddress

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Assert in scheduler from an inserted copy_to_regclass from
a constant.

This only seems to break sometimes when a constant initializer
address is forced into VGPRs in a non-entry block. No test
since the only case I've managed to hit only happens with a future
patch, and that case will also not be a problem once scalar instructions
are used in non-entry blocks.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217380 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Matt Arsenault 2014-09-08 15:07:33 +00:00
parent ef4bb30475
commit 13ea374e79
1 changed files with 2 additions and 1 deletions
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3
lib/Target/R600/SIISelLowering.cpp
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@ -1641,7 +1641,8 @@ void SITargetLowering::ensureSRegLimit(SelectionDAG &DAG, SDValue &Operand,
SDNode *Node;
// We can't use COPY_TO_REGCLASS with FrameIndex arguments.
if (isa<FrameIndexSDNode>(Operand)) {
if (isa<FrameIndexSDNode>(Operand) ||
isa<GlobalAddressSDNode>(Operand)) {
unsigned Opcode = Operand.getValueType() == MVT::i32 ?
AMDGPU::S_MOV_B32 : AMDGPU::S_MOV_B64;
Node = DAG.getMachineNode(Opcode, SDLoc(), Operand.getValueType(),